Spring for bed



FIG. 1 is a top plan view of a spring for bed showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view of a second embodiment of that shown in FIG.1;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a bottom plan view thereof;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a right side elevational view thereof; and

FIG. 12 is a left side elevational view thereof.

The ornamental design for a spring for bed, as shown and described.